A. T. Peters
1992
Citations
0
Influential Citations
3
Citations
Journal
Dyes and Pigments
Abstract
Abstract Condensation of 2-bromo-1,4-dihydroxyanthraquinone with 2-amino-2-methyl- 1,3-propanediol affords, initially, 2-(1,1-bis-hydroxymethyl)ethylamino-1,4-dihydroxyanthraquinone, which is then converted under more stringent reaction conditions into the ring closed 2,3-dihydro(1,2-b)(1,4)oxazine-7,12-dione analogue. This compound has two resolved long wavelength maxima at 20 and 60 nm longer wavelength than the uncyclised precursor and gives deep violet-red colorations of excellent fastness to light on polyester. Similar reactions with analogous aminoalcohols are also reported.